Malaysian authorities have detected parasites in a shipment of canned sardine weighing over 16 tonnes imported from China via Singapore, Malaysian media reported. Malaysian Quarantine and Inspection Services Department (Maqis) said that samples taken from the batch were...
No. But if you keep a lot of fish really tightly packed in the same place those parasites will have a much easier time spreading.
Yes. Again, my point is that fish parasites are widely present in wild fish populations and have been since before fish farming existed
Yes… But with open net fish farming you get more fish with parasites and more parasites per fish. So it was a lesser problem before.